MCP51 what is the network module name

[geisj at pagestation.com (Jerry Geis)]

I have a new biostar motherboard with nvidia chipset.
The lspci says MCP51 ethernet. The module was not detected although
for FC4 installs it says it works.

What is the network module name for the MCP51 driver so that I can
try loading it manually.
CentOS 4.2


Thanks,

Jerry